CN108326641B - Clamping assembly and knife grinder - Google Patents
Clamping assembly and knife grinder Download PDFInfo
- Publication number
- CN108326641B CN108326641B CN201810266290.2A CN201810266290A CN108326641B CN 108326641 B CN108326641 B CN 108326641B CN 201810266290 A CN201810266290 A CN 201810266290A CN 108326641 B CN108326641 B CN 108326641B
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- mounting seat
- circumferential
- cutter
- knife
- elastic
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- 238000001125 extrusion Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 3
- 238000000227 grinding Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/02—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of milling cutters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention is suitable for the technical field of knife sharpeners, and provides a clamping assembly and a knife sharpeners. According to the invention, the elastic component is additionally arranged in the clamping component, so that the relative position of the cutter positioned by the circumferential positioning seat and the mounting seat can ensure that the surface to be ground of the cutter can be just contacted with the grinding wheel when the mounting seat is mounted on the processing station of the knife grinder, and the grinding precision of the cutter is ensured.
Description
Technical Field
The invention belongs to the technical field of knife sharpeners, and particularly relates to a clamping assembly for clamping a cutter and a knife sharpeners with the clamping assembly.
Background
In the prior art, milling cutter can wear out after using for a long time, the precision of the part that cutter after wearing and tearing processed out can drop by a wide margin, at present, there is a knife grinder, be used for grinding the cutter after wearing and tearing, the cutter can reuse after being ground, this kind of knife grinder includes the frame, the emery wheel and be used for the centre gripping subassembly of centre gripping cutter, be provided with in the frame can with centre gripping subassembly complex axial positioning seat, circumference positioning seat and processing station, centre gripping subassembly including the adjustment subassembly that is used for the centre gripping cutter and with adjustment subassembly swing joint and can with axial positioning seat, circumference positioning seat and processing station complex mount pad, wherein, axial positioning seat is used for fixing a position cutter and mount pad in the relative position of cutter axial direction, after all fixing a position the axial direction and the circumference direction of mount pad with the cutter, install the centre gripping subassembly at processing station and make processing station and mount pad cooperation this moment again, the grinding face that waits on the cutter just can laminate with on the machine, can grind the emery wheel to the cutter.
The circumferential positioning seat comprises a circumferential mounting table which can be matched with the mounting seat and a circumferential resisting piece used for resisting rotation of the cutter, and particularly, when the cutter and the mounting seat are positioned in the circumferential direction of the cutter, the cutter is clamped by the clamping assembly, at the moment, the cutter is clamped by the clamping assembly, the adjusting assembly can rotate relative to the mounting seat, the cutter can also rotate relative to the mounting seat, then, the mounting seat is mounted on the circumferential mounting table, the adjusting assembly is manually rotated, the cutter rotates relative to the mounting seat until the cutting edge of the cutter is resisted on the circumferential resisting piece, at the moment, the relative position of the cutter and the mounting seat is the relative position of the cutter, which is required to be positioned by the circumferential positioning seat, and the mounting seat in the circumferential direction of the cutter, and then, the cutter is locked, so that the relative position of the cutter and the mounting seat is kept fixed, and the surface to be ground of the cutter can be just attached to the grinding wheel after the mounting seat is mounted on the processing station. However, when the adjustment assembly is manually adjusted so that the cutting edge of the tool is abutted against the circumferential abutment, the tool may not always contact the circumferential abutment due to hand shake, and thus, after the relative position of the tool and the mounting seat is locked, a large error may occur in the determined relative position of the tool and the mounting seat, and further, the grinding precision of the tool may be affected.
Disclosure of Invention
The invention aims to provide a clamping assembly and a knife grinder, and aims to solve the technical problems that in the existing knife grinder, after the relative positions of a cutter and a mounting seat are locked, larger errors occur in the determined relative positions of the cutter and the mounting seat, and the grinding precision of the cutter is further affected.
The invention is realized in that the clamping assembly is used for a knife grinder, the clamping assembly comprises an adjusting assembly used for clamping a knife and a mounting seat sleeved on the adjusting assembly and rotationally connected with the adjusting assembly, the knife grinder comprises a frame main body, a circumferential positioning seat mounted on the frame main body and used for positioning the knife and the mounting seat at the relative position of the knife in the circumferential direction, the circumferential positioning seat comprises a circumferential mounting table matched with the mounting seat and a circumferential resisting piece used for resisting the rotation of the knife, and the clamping assembly also comprises an elastic assembly, one end of which is connected with the mounting seat, the other end of which is connected with the adjusting assembly and drives the adjusting assembly to rotate relative to the mounting seat so as to press the knife on the circumferential resisting piece, and a circumferential limiting assembly used for limiting the rotation of the adjusting assembly relative to the mounting seat after the circumferential resisting piece resists the knife.
Further, the elastic component comprises a first pull column, a second pull column and a tension spring, wherein one end of the first pull column is fixedly connected with the adjusting component, one end of the second pull column is fixedly connected with the mounting seat, one end of the tension spring is connected with the first pull column, and the other end of the tension spring is connected with the second pull column so as to drive the adjusting component to rotate relative to the mounting seat.
Further, an arc-shaped accommodating groove taking the rotation axis of the adjusting assembly as a circle center is formed in the end face, facing the mounting seat, of the adjusting assembly, the first pull column is located in the arc-shaped accommodating groove, one end of the second pull column is fixedly connected with the mounting seat, the other end of the second pull column extends to the arc-shaped accommodating groove, and the tension spring is located in the arc-shaped accommodating groove.
Further, the adjusting component comprises a receiving pipe fitting rotationally connected with the mounting seat, an elastic chuck which is accommodated in the receiving pipe fitting and used for clamping the cutter, and an extrusion pipe fitting which is sleeved with the receiving pipe fitting and used for controlling the elastic chuck to clamp the cutter.
Further, a conical hole is formed in the receiving pipe fitting, the elastic chuck is accommodated in the conical hole, a cutter clamping through hole which extends along the axial direction of the conical hole and is used for the cutter to pass through is formed in the elastic chuck, the elastic chuck is elastic in the radial direction of the elastic chuck, a threaded hole with the axis coincident with the axis of the conical hole is further formed in the receiving pipe fitting, external threads matched with the threaded hole are formed in the outer side wall of the extruding pipe fitting, and the extruding pipe fitting is in threaded connection with the threaded hole and pushes the elastic chuck to enable the elastic chuck to clamp the cutter.
Further, a first annular groove which is arranged around the axis of the elastic chuck is formed in the outer side wall of the elastic chuck, and a convex plate which is inserted into the first annular groove and used for driving the elastic chuck to move is arranged on the extrusion pipe fitting.
Further, the outer side wall of the adjusting component is provided with a second annular groove which is arranged around the axis of the adjusting component, the side wall of the mounting seat is provided with a pin hole, and the clamping component further comprises a pin column, one end of the pin column is fixedly connected in the pin hole, the other end of the pin column is inserted into the second annular groove, and the pin column moves circumferentially around the axis of the adjusting component in the second annular groove.
Further, the side wall of the mounting seat is further provided with a threaded through hole extending along the radial direction of the mounting seat, the circumferential limiting assembly comprises an arc-shaped elastic sheet, and a pushing screw, wherein one end of the arc-shaped elastic sheet is fixedly connected to the mounting seat, the other end of the arc-shaped elastic sheet extends around the axis of the mounting seat and is positioned between the threaded through hole and the adjusting assembly, and the pushing screw is screwed into the threaded through hole and used for pushing the arc-shaped elastic sheet to tightly press the arc-shaped elastic sheet to the outer side wall of the adjusting assembly.
Further, the cutter includes a cutter body and a cutting margin connected with the cutter body and formed to extend spirally around an axial direction of the cutter body for cutting a product, the circumferential abutment being abutted against the cutting margin.
The invention also provides a knife grinder, which comprises the clamping assembly, wherein the knife grinder comprises a frame main body and a circumferential positioning seat which is arranged on the frame main body and used for positioning the knife and the mounting seat at the opposite position of the knife in the circumferential direction, and the circumferential positioning seat comprises a circumferential mounting table which is matched with the mounting seat and a circumferential resisting piece which is used for resisting the rotation of the knife.
Compared with the prior art, the invention has the technical effects that: according to the invention, the elastic component is additionally arranged in the clamping component, specifically, one end of the elastic component is connected with the mounting seat, the other end of the elastic component is connected with the adjusting component and drives the adjusting component to rotate relative to the mounting seat so as to press the cutter on the circumferential resisting piece, the cutter is always contacted with the circumferential resisting piece under the action of the elastic component, then the relative position of the cutter and the mounting seat is locked through the circumferential limiting component, at the moment, the determined relative position of the cutter and the mounting seat ensures the precision, and the relative position of the cutter positioned by the circumferential positioning seat and the mounting seat can ensure that the surface to be ground of the cutter is just contacted with the grinding wheel when the mounting seat is mounted on a processing station of the knife grinder, so that the grinding precision of the cutter is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the embodiments of the present invention or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a knife grinder provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of circumferential positioning of a tool by a circumferential positioning seat according to an embodiment of the present invention;
FIG. 3 is a perspective view of a tool provided by an embodiment of the invention;
FIG. 4 is an enlarged view of a portion of FIG. 2;
FIG. 5 is a perspective view of a clamping assembly provided by an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a clamping assembly provided by an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a clamping assembly provided by an embodiment of the present invention;
FIG. 8 is an exploded view of a clamping assembly provided by an embodiment of the present invention;
fig. 9 is an exploded view of a clamping assembly provided by an embodiment of the present invention.
Reference numerals illustrate:
| 100 | knife grinder | 222 | First annular groove |
| 110 | Rack main body | 230 | Extrusion pipe fitting |
| 111 | Axial positioning seat | 231 | External screw thread |
| 112 | Grinding wheel | 232 | Convex plate |
| 120 | Circumferential positioning seat | 240 | Mounting base |
| 121 | Circumferential mounting table | 241 | Pin hole |
| 122 | Circumferential abutment | 242 | Pin column |
| 130 | Processing station | 243 | Threaded through hole |
| 200 | Clamping assembly | ||
| 210 | Adjusting assembly | 251 | First pull column |
| 211 | Adapting pipe fitting | 252 | Second pull column |
| 212 | Second annular groove | 253 | Tension spring |
| 213 | Tapered bore | 254 | Arc-shaped accommodating groove |
| 214 | Threaded hole | 260 | Circumferential limiting assembly |
| 220 | Elastic chuck | 261 | Arc spring plate |
| 221 | Clamping knife through hole | 262 | Pushing screw |
| 300 | Cutting tool | ||
| 301 | Tool body | ||
| 302 | Cutting edge margin |
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Finally, the "axial direction of the tool" is the y direction in fig. 3, and the "circumferential direction of the tool" is the x direction in fig. 3.
The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
Referring to fig. 1 to 9, the clamping assembly 200 provided by the present invention is used for a knife grinder 100, the clamping assembly 200 includes an adjusting assembly 210 for clamping a knife 300 and a mounting seat 240 sleeved on the adjusting assembly 210 and rotationally connected with the adjusting assembly 210, the knife grinder 100 includes a frame body 110 and a circumferential positioning seat 120 mounted on the frame body 110 and used for positioning the knife 300 and the mounting seat 240 at a position opposite to the circumferential direction of the knife 300, the circumferential positioning seat 120 includes a circumferential mounting table 121 for matching with the mounting seat 240 and a circumferential abutment 122 for abutting against rotation of the knife 300, the clamping assembly 200 further includes an elastic assembly having one end connected to the mounting seat 240 and the other end connected to the adjusting assembly 210 and driving the adjusting assembly 210 to rotate relative to the mounting seat 240 so as to press the knife 300 against the circumferential abutment 122 and a circumferential abutment 260 for limiting rotation of the adjusting assembly 210 relative to the mounting seat 240 after the circumferential abutment 122 abuts against the knife 300.
Referring to fig. 1 to 9, an elastic component is added in the clamping component 200, specifically, one end of the elastic component is connected to the mounting seat 240, the other end of the elastic component is connected to the adjusting component 210 and drives the adjusting component 210 to rotate relative to the mounting seat 240 so as to press the tool 300 against the circumferential resisting member 122, after the mounting seat 240 is mounted on the circumferential mounting table 121, the tool 300 is always contacted with the circumferential resisting member 122 under the action of the elastic component, and then the relative position of the tool 300 and the mounting seat 240 is locked through the circumferential limiting component 260, at this time, the determined relative position of the tool 300 and the mounting seat 240 ensures the precision, so that the relative position of the tool 300 positioned by the circumferential positioning seat 120 and the mounting seat 240 can enable the surface to be ground of the tool 300 to be just contacted with the grinding wheel 112 when the mounting seat 240 is mounted on the processing station 130 of the knife grinder 100, thereby ensuring the grinding precision of the tool 300.
Referring to fig. 6 to 9, further, the elastic assembly includes a first pull column 251 having one end fixedly connected to the adjusting assembly 210, a second pull column 252 having one end fixedly connected to the mounting base 240, and a tension spring 253 having one end connected to the first pull column 251 and the other end connected to the second pull column 252 for driving the adjusting assembly 210 to rotate relative to the mounting base 240. Specifically, after the mounting seat 240 is mounted on the circumferential mounting table 121, the tension spring 253 pulls the first pull column 251 to move, and further drives the adjusting assembly 210 and the tool 300 to rotate relative to the mounting seat 240 until the tool 300 abuts against the circumferential abutment 122, and the tension spring 253 is still in a stretched state, so that the tool 300 is pressed against the circumferential abutment 122. Since the tension spring 253 has small variation of tension force under the condition of the same deformation amount in the long-term use process, when the elastic component presses different cutters 300 on the circumferential resisting piece 122, the deformation amount of micro deformation of the circumferential resisting piece 122 is the same, and thus, the relative positions of each cutter 300 and the mounting seat 240 can be accurately and uniformly adjusted to the same relative position, and the relative position can enable the surface to be ground of the cutter 300 to be just contacted with the grinding wheel 112 when the mounting seat 240 is mounted on the processing station 130 of the knife grinder 100.
Referring to fig. 7 and 9, further, an arc-shaped accommodating groove 254 centered on the rotation axis of the adjusting assembly 210 is provided on an end surface of the adjusting assembly 210 facing the mounting base 240, the first pull column 251 is located in the arc-shaped accommodating groove 254, one end of the second pull column 252 is fixedly connected with the mounting base 240, the other end extends toward the arc-shaped accommodating groove 254, and the tension spring 253 is located in the arc-shaped accommodating groove 254. By disposing the first pull stud 251, the second pull stud 252, and the tension spring 253 within the arcuate receiving slot 254, the clamping assembly 200 is more compact.
Referring to fig. 6 to 9, further, the adjusting assembly 210 includes a receiving tube 211 rotatably connected to the mounting base 240, a collet 220 accommodated in the receiving tube 211 and used for clamping the tool 300, and a pressing tube 230 sleeved on the receiving tube 211 and used for controlling the collet 220 to clamp the tool 300. Further, a tapered hole 213 is provided in the receiving tube 211, the collet 220 is accommodated in the tapered hole 213, a tool clamping through hole 221 extending along an axial direction of the tapered hole 213 and allowing the tool 300 to pass through is provided in the collet 220, the collet 220 has elasticity in a radial direction thereof, a threaded hole 214 having an axis coincident with an axis of the tapered hole 213 is further provided in the receiving tube 211, an external thread 231 matching with the threaded hole 214 is provided on an outer side wall of the extrusion tube 230, and the extrusion tube 230 is screwed to the threaded hole 214 and pushes the collet 220 to clamp the tool 300. When the tool 300 needs to be clamped by the adjusting assembly 210, the tool 300 is inserted into the tool clamping through hole 221 in the collet 220, and then the extrusion pipe 230 is rotated, so that the extrusion pipe 230 pushes the collet 220 to move in the tapered hole 213, the moving direction is toward the side with smaller diameter of the tapered hole 213, at this time, the tapered hole 213 extrudes the collet 220, and the collet 220 clamps the tool 300 due to the elasticity of the collet 220 in the radial direction, so that the tool 300 cannot be displaced in the axial direction relative to the mounting seat 240. At this time, since the adjusting assembly 210 is rotatably connected to the mounting base 240, the tool 300 can still rotate relative to the mounting base 240 in the circumferential direction of the tool 300, that is, the tool 300 can rotate relative to the mounting base 240 at this time, so that the subsequent circumferential positioning base 120 can position the relative positions of the tool 300 and the mounting base 240 in the circumferential direction of the tool 300.
Referring to fig. 6 to 9, further, a first annular groove 222 is formed on an outer sidewall of the collet 220 and surrounds an axis of the collet 220, and a protruding plate 232 is formed on the extrusion tube 230 and inserted into the first annular groove 222 to drive the collet 220 to move. After the cutter 300 is ground, the cutter 300 needs to be detached from the clamping assembly 200, based on the structure, when the cutter 300 needs to be detached, the pipe 230 can be extruded by reverse rotation, at this time, the convex plate 232 can drive the elastic clamp 220 to pull towards the direction with larger diameter of the tapered hole 213, in the pulling process, the elastic clamp 220 can gradually spring outwards, the cutter 300 is not clamped any more, and at this time, the cutter 300 can be detached from the clamping assembly 200 easily.
Referring to fig. 6 to 9, further, the outer side wall of the adjusting assembly 210 is provided with a second annular groove 212 disposed around the axis of the adjusting assembly 210, the side wall of the mounting seat 240 is provided with a pin hole 241, and the clamping assembly 200 further includes a pin 242 having one end fixedly connected to the pin hole 241 and the other end inserted into the second annular groove 212 and performing a circular motion around the axis of the adjusting assembly 210 in the second annular groove 212. During rotation of the adjustment assembly 210 relative to the mounting base 240, the pin 242 moves circumferentially within the second annular groove about the axis of the adjustment assembly 210, providing a guide for rotation of the adjustment assembly 210.
Referring to fig. 6 to 9, further, the side wall of the mounting seat 240 is further provided with a threaded through hole 243 extending along a radial direction thereof, and the circumferential limit assembly 260 includes an arc spring 261 having one end fixedly connected to the mounting seat 240 and the other end extending around the axis of the mounting seat 240 and located between the threaded through hole 243 and the adjusting assembly 210, and a pushing screw 262 screwed in the threaded through hole 243 for pushing the arc spring 261 to compress the arc spring 261 on the outer side wall of the adjusting assembly 210. Specifically, after the circumferential positioning seat 120 positions the relative position of the tool 300 and the mounting seat 240, that is, after the elastic component compresses the tool 300 against the circumferential resisting member 122, the pushing screw 262 is rotated, so that the pushing screw 262 moves the arc-shaped elastic sheet 261 towards the adjusting component 210 until the arc-shaped elastic sheet 261 is tightly attached to the adjusting component 210, and the adjusting component 210 cannot continue to rotate relative to the mounting seat 240 due to the friction force, so that the relative position of the tool 300 and the mounting seat 240 is locked. In the embodiment of the invention, the pushing screw 262 pushes the arc-shaped elasticity to limit the rotation of the adjusting component 210, compared with the contact of the pushing screw 262 with the adjusting component 210, the contact area of the arc-shaped elastic sheet 261 and the adjusting component 210 is larger, the damage to the adjusting component 210 is lighter in the long-time use process, the service life of the clamping component 200 is prolonged, and in addition, if the pushing screw 262 is in direct contact with the adjusting component 210, the outer side wall of the adjusting component 210 is scratched by the pushing screw 262 in the long-time use process, so that the installation of the adjusting component 210 and the mounting seat 240 is loose, and the processing precision of the cutter 300 is seriously affected. Preferably, the arc-shaped elastic piece 261 is integrally formed with the mounting seat 240.
Referring to fig. 4, further, the cutter 300 includes a cutter body 301 and a cutting margin 302 connected to the cutter body 301 and spirally extending around an axial direction of the cutter body 301 for cutting a product, and the circumferential abutment 122 abuts against the cutting margin 302.
Referring to fig. 1, the present invention further provides a knife sharpener 100, including the above-mentioned clamping assembly 200, where the knife sharpener 100 includes a frame body 110 and a circumferential positioning seat 120 mounted on the frame body 110 and used for positioning the knife 300 and the mounting seat 240 at a position opposite to the knife 300 in a circumferential direction, and the circumferential positioning seat 120 includes a mounting table for cooperating with the mounting seat 240 and a circumferential resisting member 122 for resisting rotation of the knife 300. The structure of the clamping assembly 200 has the same structural features as the structure of the clamping assembly 200 in the above embodiments, and the functions are the same, which is not repeated here.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The knife grinder comprises a frame main body, a circumferential positioning seat and a circumferential limiting component, wherein the circumferential positioning seat is installed on the frame main body and used for positioning the knife and the mounting seat at the opposite position of the knife in the circumferential direction, and comprises a circumferential mounting table matched with the mounting seat and a circumferential resisting piece used for resisting the rotation of the knife, and the circumferential limiting component is characterized in that one end of the clamping component is connected with the mounting seat, the other end of the clamping component is connected with the adjusting component and drives the adjusting component to rotate relative to the mounting seat so as to press the knife to the circumferential resisting piece, and the circumferential limiting component is used for limiting the rotation of the adjusting component relative to the mounting seat after the circumferential resisting piece resists the knife;
the adjusting component comprises a receiving pipe fitting rotationally connected with the mounting seat, an elastic chuck which is accommodated in the receiving pipe fitting and used for clamping the cutter, and an extrusion pipe fitting which is sleeved with the receiving pipe fitting and used for controlling the elastic chuck to clamp the cutter;
the elastic clamping head is provided with a cutter clamping through hole which extends along the axial direction of the conical hole and is used for the cutter to pass through, the elastic clamping head is elastic in the radial direction of the elastic clamping head, the receiving pipe is internally provided with a threaded hole with the axis coincident with the axis of the conical hole, the outer side wall of the extrusion pipe is provided with an external thread matched with the threaded hole, and the extrusion pipe is in threaded connection with the threaded hole and pushes the elastic clamping head to enable the elastic clamping head to clamp the cutter; rotating the extrusion pipe fitting to enable the extrusion pipe fitting to push the elastic chuck to move in the conical hole, wherein the moving direction is towards the side with the smaller diameter of the conical hole; the conical hole presses the elastic chuck, the elastic chuck clamps the cutter, so that the cutter cannot displace in the axial direction relative to the mounting seat any more, and the cutter rotates relative to the mounting seat;
the elastic component comprises a first pull column, a second pull column and a tension spring, wherein one end of the first pull column is fixedly connected with the adjusting component, one end of the second pull column is fixedly connected with the mounting seat, one end of the tension spring is connected with the first pull column, and the other end of the tension spring is connected with the second pull column so as to drive the adjusting component to rotate relative to the mounting seat, and the tension spring is single;
an arc-shaped containing groove taking the rotation axis of the adjusting assembly as the center of a circle is formed in the end face of the adjusting assembly, which faces the mounting seat, the first pull column is located in the arc-shaped containing groove, one end of the second pull column is fixedly connected with the mounting seat, the other end of the second pull column extends to the arc-shaped containing groove, and the tension spring is located in the arc-shaped containing groove;
after the mounting seat is mounted on the circumferential mounting table, the tension spring can pull the first pull column to move, and then the adjusting assembly and the cutter are driven to rotate relative to the mounting seat until the cutter abuts against the circumferential resisting piece, at the moment, the tension spring is still in a stretching state, so that the cutter is tightly pressed on the circumferential resisting piece, and the cutter is always contacted with the circumferential resisting piece under the action of the elastic assembly.
2. The clamping assembly according to claim 1, wherein the outer side wall of the elastic chuck is provided with a first annular groove which is arranged around the axis of the elastic chuck, and the extrusion pipe fitting is provided with a convex plate which is inserted into the first annular groove and used for driving the elastic chuck to move.
3. The clamping assembly of claim 1, wherein the outer side wall of the adjustment assembly is provided with a second annular groove arranged around the axis of the adjustment assembly, the side wall of the mounting seat is provided with a pin hole, and the clamping assembly further comprises a pin with one end fixedly connected in the pin hole and the other end inserted into the second annular groove and performing circular motion around the axis of the adjustment assembly in the second annular groove.
4. The clamping assembly of claim 1, wherein the side wall of the mounting seat is further provided with a threaded through hole extending along the radial direction of the mounting seat, and the circumferential limiting assembly comprises an arc-shaped elastic sheet, one end of the arc-shaped elastic sheet is fixedly connected to the mounting seat, the other end of the arc-shaped elastic sheet extends around the axis of the mounting seat and is positioned between the threaded through hole and the adjusting assembly, and a pushing screw screwed into the threaded through hole and used for pushing the arc-shaped elastic sheet to press the arc-shaped elastic sheet to the outer side wall of the adjusting assembly.
5. The clamping assembly of any one of claims 1-4, wherein the tool comprises a tool body and a cutting margin connected to the tool body and extending helically about an axial direction of the tool body for cutting a product, the circumferential abutment abutting against the cutting margin.
6. A knife sharpener comprising a clamping assembly as claimed in any one of claims 1 to 5, said sharpener comprising a frame body and a circumferential locating seat mounted on said frame body for locating said knife in a position circumferentially opposite said mounting seat to said knife, said circumferential locating seat comprising a circumferential mounting table for cooperating with said mounting seat and a circumferential abutment for resisting rotation of said knife.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266290.2A CN108326641B (en) | 2018-03-28 | 2018-03-28 | Clamping assembly and knife grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810266290.2A CN108326641B (en) | 2018-03-28 | 2018-03-28 | Clamping assembly and knife grinder |
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| Publication Number | Publication Date |
|---|---|
| CN108326641A CN108326641A (en) | 2018-07-27 |
| CN108326641B true CN108326641B (en) | 2024-02-20 |
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| CN201810266290.2A Active CN108326641B (en) | 2018-03-28 | 2018-03-28 | Clamping assembly and knife grinder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110802447B (en) * | 2018-08-06 | 2021-04-09 | 洪逸博 | Bit sharpening machine capable of arbitrarily adjusting dead point size of two-bevel or three-bevel bit |
| CN110125737B (en) * | 2019-06-03 | 2024-03-19 | 深圳市金洲精工科技股份有限公司 | Bracket mechanism |
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| CN108326641A (en) | 2018-07-27 |
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